Please help! This 2003 dodge carvan sport 3.3

Asked by Apr 26, 2017 at 11:14 AM about the 2003 Dodge Caravan Sport

Question type: Maintenance & Repair

This thing has send me though hell and
back!

It keeps blowing the map Sensor 3x
replaced
I was told by Hendrick auto shop is was the
engine computer. I had it sent off for repair
come to find out NOTHING was wrong with
it.

I am at a loss here I a a single mom with 3
kids I need this darn thing running!

1 Answer

113,525

The Manifold Absolute Pressure (MAP) sensor is used by the Powertrain Control Module (PCM) for engine load input. The PCM uses this input, as well as others, to calculate the correct amount of fuel to inject into the cylinders. The MAP sensor measures the absolute pressure inside the intake manifold of the engine. At sea level, atmospheric pressure is about 14.7 psi (pounds per square inch). When the engine is off, the absolute pressure inside the intake equals atmospheric pressure, so the MAP will indicate about 14.7 psi. At a perfect vacuum, the MAP sensor will read 0 psi. When the engine is running, the downward motion of the pistons create a vacuum inside the intake manifold (For the purposes of engine control, when a technician says vacuum, what they are really saying is pressure that is less than atmospheric pressure). With a running engine, intake manifold vacuum usually runs around 18 - 20 “Hg (inches of mercury). At 20 “Hg, the MAP sensor will indicate about 5 psi. This is because the MAP sensor measures “absolute” pressure, based on a perfect vacuum, rather than atmospheric pressure. Make sure your shop replaces all the vacuum hoses on the car...

Your Answer

Dodge Caravan Experts

  • #1
    Tom Demyan
    Reputation
    1,420
  • #2
    COMETGUY61
    Reputation
    970
  • #3
    tenspeed
    Reputation
    760
View All

Related Models For Sale

Used Dodge Grand Caravan
359 Great Deals out of 14,246 listings starting at $2,495
Used Chrysler Town & Country
38 Great Deals out of 584 listings starting at $4,495
Used Honda Odyssey
39 Great Deals out of 923 listings starting at $1,499
Used Toyota Sienna
26 Great Deals out of 1,136 listings starting at $2,919
Used Chrysler Pacifica
7 Great Deals out of 1,446 listings starting at $4,495
Used Dodge Durango
182 Great Deals out of 1,107 listings starting at $4,490
Used Kia Sedona
11 Great Deals out of 534 listings starting at $3,295
Used Ford Explorer
22 Great Deals out of 1,568 listings starting at $1,799
Used Nissan Quest
70 listings starting at $2,500
Used Ford F-150
646 Great Deals out of 10,068 listings starting at $2,995
Used Honda Pilot
19 Great Deals out of 629 listings starting at $1,000
Used Toyota Camry
113 Great Deals out of 2,271 listings starting at $1,599

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.